Merge pull request #9 from sindresorhus/benchmark

Add Node.js benchmarks. [fixes #8]

Former-commit-id: 28c7f83738da1f34dfdf5c2f1998834d6c802d0f

benchmark/test.js

@@ -0,0 +1,150 @@
+/*global _, lodash */
+var Benchmark = require('../vendor/benchmark.js');
+var colors = require('colors');
+var count = {
+	underscore: 0,
+	lodash: 0
+};
+
+// Workaround node.js scoping issue
+global.lodash = require('../');
+global._ = require('../vendor/underscore');
+
+
+Benchmark.options.setup = function() {
+	var objects, randomized;
+	var lodash = global.lodash;
+	var _ = global._;
+	var numbers = [];
+	var object = {};
+	var i = 0;
+
+	for ( ; i < 20; i++ ) {
+		numbers[ i ] = i;
+		object[ 'key' + i ] = i;
+	}
+
+	objects = _.map(numbers, function( n ) {
+		return { 'num': n };
+	});
+	randomized = _.sortBy(numbers, function() {
+		return Math.random();
+	});
+};
+
+function start() {
+	console.log( '\n' + this.name.bold );
+}
+
+function cycle( e ) {
+	console.log( e.target.toString().grey );
+}
+
+function complete() {
+	console.log( this.filter('fastest').pluck('name').toString().green + ' fastest' );
+	count.underscore += this[0].count;
+	count.lodash += this[1].count;
+}
+
+
+/* each */
+Benchmark.Suite('each')
+.add('Underscore', function() {
+	var timesTwo = [];
+	_.each( numbers, function( num ) {
+		timesTwo.push( num * 2 );
+	});
+})
+.add('Lodash', function() {
+	var timesTwo = [];
+	lodash.each( numbers, function( num ) {
+		timesTwo.push( num * 2 );
+	});
+})
+.on( 'start', start )
+.on( 'cycle', cycle )
+.on( 'complete', complete )
+.run();
+
+
+/* each object */
+Benchmark.Suite('each object')
+.add('Underscore', function() {
+	var timesTwo = [];
+	_.each( object, function( num ) {
+		timesTwo.push( num * 2 );
+	});
+})
+.add('Lodash', function() {
+	var timesTwo = [];
+	lodash.each( object, function( num ) {
+		timesTwo.push( num * 2 );
+	});
+})
+.on( 'start', start )
+.on( 'cycle', cycle )
+.on( 'complete', complete )
+.run();
+
+
+/* keys */
+Benchmark.Suite('keys')
+.add('Underscore', function() {
+	_.keys( object );
+})
+.add('Lodash', function() {
+	lodash.keys( object );
+})
+.on( 'start', start )
+.on( 'cycle', cycle )
+.on( 'complete', complete )
+.run();
+
+
+/* map */
+Benchmark.Suite('map')
+.add('Underscore', function() {
+	_.map( objects, function( obj ) {
+		return obj.num;
+	});
+})
+.add('Lodash', function() {
+	lodash.map( objects, function( obj ) {
+		return obj.num;
+	});
+})
+.on( 'start', start )
+.on( 'cycle', cycle )
+.on( 'complete', complete )
+.run();
+
+
+/* pluck */
+Benchmark.Suite('pluck')
+.add('Underscore', function() {
+	_.pluck( objects, 'num' );
+})
+.add('Lodash', function() {
+	lodash.pluck( objects, 'num' );
+})
+.on( 'start', start )
+.on( 'cycle', cycle )
+.on( 'complete', complete )
+.run();
+
+
+/* values */
+Benchmark.Suite('values')
+.add('Underscore', function() {
+	_.values( objects );
+})
+.add('Lodash', function() {
+	lodash.values( objects );
+})
+.on( 'start', start )
+.on( 'cycle', cycle )
+.on( 'complete', complete )
+.run();
+
+
+console.log( ('\nLodash is ' + ( count.lodash / count.underscore ).toFixed(2) + 'x faster than Underscore' ).green );

package.json

@@ -38,5 +38,8 @@
   "directories": {
     "doc": "./doc",
     "test": "./test"
+  },
+  "devDependencies": {
+    "colors": "~0.6.0"
   }
 }